fis-ke



(No Model.) 3 Sheets-Sheet 1.

H. G. FISKE. BLOUK PAVEMENT FOB STREETS AND SIDEWALKS AND MOLD FOR UONSTRUOTING THE SAME.

No. 316,450. Patented Apr. 28, 1885.-

2111555155. E 3 @IN/VJ-ZNTEIR. 3m! i (I Io Model.) 3 Sheets-Sheet 2. H. G. PIS-KB.

BLOCK PAVEMENT 'POR.STREETS AND SIDEWALKS AND MOLD FDR. GONSTRUUTING THE SAME.

No. 316,450. Patented Apr. 28, 1885.

INVENTUF f @f flW/M (No Model.) 3 S'heetsSheet 3.

H. G. FISKE.

BLOGK PAVEMENT FOR STREETS AND SIDEWALKS AND MOLD FOR OONSTRUUTINGTHE SAME.

No. 316,450. Patented Apr. 28, 1885.

EVZITNEEEEEW; 3 @Invzmma.

UNITED STaTns PATENT Tries.

HENRY G. FISKE, OF SAN FRANCISCO, CALIFORNIA.

BLOCK PAVEMENT FOR STREETS AND SIDEWALKS AND MOLD FOR CONSTRUCTING THE. SAME.

SPECIFICATION forming part of Letters Patent No. 316,4:50, dated April 28, 1885.

Application filed December 4. 1884.

T0 aZZ whom it may concern:

Be it known that I, HENRY G. FISKE, a citizen of the United States, residing at San Francisco, in the county ofSan Francisco and State of California, have invented a new and useful Improvement in Block Pavements for Streets and Sidewalks and Molds for Oonstructing the Same, of which the following is a specification.

Figure 1 is a perspective view of the table or stand containing tray upon which the block is formed. Fig. 2 is a perspective view of the frame or mold. Fig. 8 is a perspective View of the rectangular strengthening-frame. Fig. 4 is a perspective view of the iron frame. Fig. 5 is a longitudinal section through the sand-containing tray andmolding-frame. Fig. 6 is a perspective View of the block of concrete or asphaltum, showing one end broken away and exposing the strengthening-frame 0, contained therein.

Similar letters of reference are used to indicate like parts throughout the several views.

In carrying out my invention I employ a rectangularv frame constructed of boards or planks by placing between the two series of longitudinal boards A A the cross-pieces or connecting-boards B B. These are then nailed together through and through where the crosspieces intersect with the longitudinal pieces. The crosspieces are placed between the longitudinal pieces a little distance from their ends, as shown. Thus it will be seen that a frame, 0, is formed having a central hollow space, D, and side and end spaces, E F, and this frame forms the nucleus of my paving block.

In the further construction of my pavingblock I employ a tray, G, which is much larger than the frame 0, and mounted on legs G. This tray I fill with clean sharp sand and strike it off with a straight-edge, so that the tray will be filled with sand up to the top edges thereof and be on a horizontal plane. Over this tray of sandis placed a frame, H, the corners of which are provided with iron strengthingstraps H H and extended arms H, which latter are employed for convenience in handling. I then employ a frame of iron, I, which is dovetailed, rabbeted, or locked at the corners, so that it can easily be taken apart piece by piece. This frame is made smaller than the (No model.)

molding-frame H, and so that it will be received by it, with its outer faces resting closely against the inner faces ofthe frame H. and with the lower edge resting upon the sand in the tray beneath. It should here be observed that the inner faces of the frame I are covered with a coating of tallow, to prevent the mastic or asphaltum compound from adhering thereto. I then cover the sand in the lower compartment or tray with concrete asphalt-say about one inch deep-and after having dipped the framework 0 in a kettle or tank of asphaltum and coal-tar suitably tempered, I place it upon the plastic foundation upon the sand and permit it to settle and become fixed therein. After the frame 0 has become sufficiently settled and embedded in the foundation, I commence to build up my block by putting in rubble or beton in the hollow square of the frame 0, and tamping around the edges, and filling the spaces underneath the cross-pieces and between the longitudinal pieces until the block is built up to near the top of the frame I, inclosing all sides and ends of the bindingframe 0, when over all I pour melted asphalt and coaltar to form a smooth surface and fill up all interstices, and when the whole is suitably set I lift up and remove the molding-frame H, and then take apart and remove the frame I piece by piece, leaving the finished pavingblock J with the frame G embedded therein upon all sides and ready for laying in position in the street.

In constructing blocks for sidewalks I make a frame of less thickness than the frame C, and in building up the block I place over the concrete a layer of coarse gravel, then pour over the gravel a coating of liquid asphaltum suitably tempered with coal-tar, in such a manner as to bind the gravel and leave an indented surface, over which I float a concrete of cemcut and stone filling around the sides and edges of the block, and then the face of the block is gronted off to a smooth surface.

By this construction of mold the block can be rapidly and easily formed, and the mold can be removed from the block without adhering to the sides thereof, while the block itself will be stronger by reason of the wooden frame therein contained or embedded, and be more cheaply constructed than if the same were made wholly of asphalt, cement, or conpieces, B, said frame being formed with procrete, as the Wooden frame enters largely into jecting corners, as set forth. the component parts of the block. 2. The herein-described mold for paving- I am aware that paving and building blocks 1 blocks, consisting of the tray G, having legs 5 have heretofore been constructed on a frame- G, the moldingframe H, provided with arms 20 Work or core of metal or Wood, and therefore or handles H and angular strengtheningldo not claim such, broadly; but, straps H, and the separable metal frame I,

Having thus described my invention, what all as and for the purpose described.

I claim, and desire to secure by Letters Pat- In testimony that I claim the foregoing I I0 ent, ishave hereunto set my hand and seal.

1. A paving-block composed of plastic material capable of becoming hardened or set, HENRY K and having embeddedthereina wooden frame, \Vitnesses: 0, consisting of two longitudinal pieces or O. W. M. SMITH,

15 strips, A A, on each side, and the end cross- OHAs. E. KELLY. 

